Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2922388cbcb95bb…

MALICIOUS

PDF

44.2 KB Authoring application: PDF Studio
MD5: a71782453dd9aadd62c395aca9da34b7 SHA-1: 179db6cccd25b1c44400f16d7d92b3c93daff310 SHA-256: a2922388cbcb95bbdf440930ceff52eaeea6c1ee57e08b202fca485c1f2cc4d3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by multiple heuristics, including a critical finding for a large number of external links, suggesting a link farm. ClamAV identified it as Pdf.Phishing.TtraffRobotInstall, indicating a phishing or traffic redirection purpose. The embedded URLs are likely used to distribute further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://mid-citymaintenance.com/uploads/1/3/0/3/130323268/5492e9.pdf
    • http://salftom.store/uploads/1/3/0/4/130483650/polotaxujozozapune.pdf
    • http://mycambodonuts.com/uploads/1/3/0/6/130604210/573911.pdf
    • http://mytraining.today/uploads/1/3/0/6/130639307/3290879.pdf
    • http://reedhendersontrust.org/uploads/1/3/0/2/130272513/selofuvo_duloj_vovuxumoludadus.pdf
    • http://missbellasfriends.com/uploads/1/3/0/6/130603884/fuses.pdf
    • http://casarefugiopa.org/uploads/1/3/0/2/130271209/venedobidov-tinav-jexilalufadolu.pdf
    • http://3rdgearwaseca.org/uploads/1/3/0/5/130589281/130589281.html#fusiform+aneurysm+iliac+artery

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012eb.bin
8dbaddf79ed59662238bfe4323179cbdfb6e09eacf5752e24fe00e8df78d1c91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB 8192 bytes
font_01_sfnt_off000066d0.bin
ddc6c38a5929b263b215a5b0c7aa8b1a409f146866f06980111f9f21a6232bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D0 16036 bytes

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